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MySQL 9.0

2 articles · Page 1 of 1
Java Tech Enthusiast
Java Tech Enthusiast
Sep 13, 2026 · Databases

MySQL 9.0 GA: JSON Multi-Valued Indexes, Parallel Query V2, and AI Optimizer Deep Dive

MySQL 9.0 introduces three major features: native JSON multi-valued indexes delivering 370x faster array queries, Parallel Query V2 with work-stealing achieving 7-8x speedups on analytical workloads, and an ML-based AI query optimizer that cuts index misselection from 12% to 2% and boosts complex query performance by 25-40%.

AI query optimizerJSON multi-valued indexMySQL 9.0
0 likes · 11 min read
MySQL 9.0 GA: JSON Multi-Valued Indexes, Parallel Query V2, and AI Optimizer Deep Dive
JavaEdge
JavaEdge
Sep 15, 2024 · Databases

What’s New in MySQL 9.0? VECTOR Type, Inline FK, JSON EXPLAIN, and More

This article summarizes MySQL 9.0’s new VECTOR column type, inline and implicit foreign‑key constraints, JSON EXPLAIN ANALYZE storage, prepared event statements, performance‑schema variable tables, enhanced EXPLAIN output, LIMIT 1 subquery support, as well as deprecated and removed features with practical examples.

Deprecated featuresEXPLAIN ANALYZEInline foreign key
0 likes · 13 min read
What’s New in MySQL 9.0? VECTOR Type, Inline FK, JSON EXPLAIN, and More